Re: BUG #7634: Missing files in global/ after a lot of CREATE DATABASE / DROP DATABASE

thomas(dot)eckestad(at)gmail(dot)com writes:
> After a couple of days/weeks with frequent unit test activity DROP DATABASE
> eventually triggers errors on the following form:

> 2012-05-08 08:53:02.512 CEST> LOG: statement: DROP DATABASE IF EXISTS
> "HEAD_test_migrate_group_data_10010018668"
> 2012-05-08 08:53:02.512 CEST> ERROR: could not open file "global/12693": No
> such file or directory
> 2012-05-08 08:53:02.512 CEST> STATEMENT: DROP DATABASE IF EXISTS
> "HEAD_test_migrate_group_data_10010018668"

That is extremely peculiar --- AFAICS, 9.1 should never assign a
relfilenode of 12693. (OIDs assigned by initdb don't get past about
11900 in that version, and OIDs assigned after normal postmaster start
should always be above 16384.) Is it always exactly "global/12693"
that's complained of? Could you monitor the contents of $PGDATA/global
and see if the set of filenames present changes while you're running
these tests?

regards, tom lane